Hikvision DS-7732NXI-I4/VPRO. Video input channels: 32 channels, Maximum resolution: 3840 x 2160 pixels, Number of simultaneously playbacked channels: 32 channels. Maximum storage capacity: 20 TB, HDD interface: SATA, SATA II, SATA III. Ethernet LAN data rates: 10,100,1000 Mbit/s, Supported network protocols: TCP/IP, DHCP, IPv4, IPv6, DNS, DDNS, NTP, RTSP, SADP, SMTP, SNMP, NFS, iSCSI, ISUP, UPnP™, HTTP,.... Rack capacity: 1.5U, Product color: Black, Certification: CE, CB, REACH, WEEE, UKCA, RCM,IC,LOA,KC. Power consumption (typical): 50 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz